The following information (Health Effects, Handling/Disposal, and Ingredients) is taken from the product label and/or the Material Safety Data Sheet (MSDS) prepared by the manufacturer. The National Library of Medicine does not test products nor does it evaluate information from the product label or the MSDS. (What is an MSDS?)

Health Effects

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Warnings:

From Website Precautions: Open carefully. Do not squeeze bottle. Avoid splashing. Clean up spills at once. Keep hands, face, children, and pets away from drains when using Drano Professional Strength Foamer. Product may foam up from drain. This is normal. If foam is visible after use, rinse foam completely down drain with water. Do not use product with a plunger because Drano Professional Strength Foamer may still be present. Do not use in a toilet. For slow running toilets, use Drano Build-up Remover. Do not reuse empty container. Rinse container and replace cap before discarding. Danger: Keep out of reach of children and pets. Can cause burns on contact. Avoid contact with liquid, foam, or residue around the drain. Wash thoroughly after handling. If product contacts clothing, immediately remove and wash clothing. Harmful if swallowed. Do not taste or swallow. First Aid: Give immediately, then call a poison center, physician, or emergency room. If swallowed, rinse mouth. Immediately drink a glass of water or milk. Do not induce vomiting. Eyes and Skin: Rinse with water, remove contacts (if worn), then rinse with plenty of water for at least 20 minutes. Chemical Hazard: Contains sodium hypochlorite (bleach), a strong oxidizer. Never use or mix with other household products such as acids, bowl cleaners, rust removers, or products that contain ammonia. Hazardous gases may result. If this occurs, leave the room immediately and ventilate area if possible.

The manufacturers Material Safety Data Sheet (MSDS) does not state whether the ingredients are considered carcinogens or potential carcinogens.

First Aid:

From MSDS Eye Contact: Flush immediately with plenty of water for at least 15 to 20 minutes. If irritation persists, get medical attention. Skin Contact: Remove contaminated clothing. Flush immediately with plenty of water for at least 15 to 20 minutes. If irritation persists, get medical attention. Inhalation: Remove to fresh air. Ingestion: Do not induce vomiting! Contact nearest poison control center. Due to corrosive nature of product, may cause esophageal damage.

From MSDS Precautionary Information DANGER: KEEP OUT OF REACH OF CHILDREN. Harmful if swallowed. may burn skin and damage eyes, and mucous membranes on contact. Other Handling and Storage Conditions: Wash thoroughly after handling.

Disposal:

From MSDS Waste from normal product use may be sewered to a public-owned treatment works (POTW) in compliance with applicable Federal/Provincial/ State regulations and Local/Municipal pretreatment requirements.